Hârșova Roman Fort

Carsium

Auxiliary FortMoesia Inferior · Hârșova, RomaniaBuilt 103 CE

About

Trajan's army built Carsium in AD 103 to guard one of the most important Danube crossings on this stretch of frontier, right on the road heading into newly contested Dacian territory. The cavalry unit ala II Hispanorum et Aravacorum eventually took over the garrison, following an earlier detachment already recorded here between 98 and 117. A naval detachment of the Classis Moesica shared the site, giving Rome both river and land coverage at this single strongpoint. The fort anchored the defensive system of the Limes Moesiae for generations after Trajan's death.

What happened here

Five hundred men, sometimes a thousand, recruited from a province rather than from citizens, and often stationed a long way from where they were raised. Cavalry units get a bigger fort and far more stabling; the smell tells you which kind you are in before the plan does. The layout copies a legionary fortress at a quarter of the size — headquarters, commander's house, granaries, barracks, a bath house usually built outside the walls because of the fire risk. Duties are patrolling, escorting, customs, and policing rather than pitched battle. After twenty-five years a man is discharged with citizenship for himself and his children, recorded on a bronze diploma he keeps for life. A village grows outside the gate within a decade.